For each user you can now configure:
- TLS certificate auth
- TLS certificate auth and password
- Password auth
For TLS certificate auth, the certificate common name is used as
username
This way you can force the user to login again and so to use the updated
configuration.
A deleted user will be automatically disconnected.
Fixes#163
Improved some docs too.
HTTP clients are used for executing hooks such as the ones used for custom
actions, external authentication and pre-login user modifications.
This allows, for example, to use self-signed certificate without defeating the
purpose of using TLS
